Wondering what preforms gains I could expect going to a bigger exhaust. Currently have a 360, 4bbl, with headers going to a 3" collector. The rest of the exhaust is 2"all the way back..true duals. Would a3 inch or 2.5 do much or leave as is? Thanks
On the street or at the track?
For a streeter;
How often will you be at WOT with the tires Not spinning?
Lemmee guess, from 50 mph to 65 mph, in Second gear.
Lemmee guess with 3.23s and a torqueflite, this would be about 3350 rpm to 4360
I don't think the engine will care, and even if it does, I don't think you could ever measure it, in ET.
So I say;
leave it as it is.